You just have to click on List all extensions in the Main Menu->Web Translation System in the left side of this page, and in that new one that will open you have to pick the extension of which you desire to save your localization, or link it for the download
Click on the localization acronym  in order to save the tar.gz file, or right click and select 'Copy Link Location' in order to paste it in a post later

Or

You just have to click on Manage my translations in the Main Menu->Web Translation System in the left side of this page, and in that new one that will open you have to pick the extension of which you desire to save your localization, or link it for the download
Click on the "Download it-IT / Italian locales as tar.gz file"  in order to save the tar.gz file, or right click and select 'Copy Link Location' in order to paste it in a post later

Note: you have to be logged in order to access to the Web Translation System

 

 
For more information, please see the other Questions & Answers